mirror of https://github.com/ARMmbed/mbed-os.git
124 lines
3.6 KiB
C
124 lines
3.6 KiB
C
/* mbed Microcontroller Library
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* (C)Copyright TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION 2018 All rights reserved
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* SPDX-License-Identifier: Apache-2.0
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "gpio_api.h"
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#include "mbed_error.h"
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#include "txz_gpio.h"
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#include "PeripheralNames.h"
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#include "pinmap.h"
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#define GPIO_DATA PIN_DATA(0, 2)
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#define ALT_FUNC_GPIO 0U
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_gpio_t gpio_port_add = {
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.p_pa_instance = TSB_PA,
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.p_pb_instance = TSB_PB,
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.p_pc_instance = TSB_PC,
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.p_pd_instance = TSB_PD,
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.p_pe_instance = TSB_PE,
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.p_pf_instance = TSB_PF,
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.p_pg_instance = TSB_PG,
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.p_ph_instance = TSB_PH,
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.p_pj_instance = TSB_PJ,
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.p_pk_instance = TSB_PK,
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.p_pl_instance = TSB_PL,
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.p_pm_instance = TSB_PM,
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.p_pn_instance = TSB_PN,
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.p_pp_instance = TSB_PP,
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.p_pr_instance = TSB_PR,
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.p_pt_instance = TSB_PT,
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.p_pu_instance = TSB_PU,
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.p_pv_instance = TSB_PV,
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.p_pw_instance = TSB_PW,
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.p_py_instance = TSB_PY
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};
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uint32_t gpio_set(PinName pin)
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{
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// Check that pin is valid
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MBED_ASSERT(pin != (PinName)NC);
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// Set pin function as GPIO pin
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pin_function(pin, GPIO_DATA);
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// Return pin mask
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return (1 << (pin & 0x07));
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}
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void gpio_init(gpio_t *obj, PinName pin)
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{
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// Store above pin mask, pin name into GPIO object
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obj->pin = pin;
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obj->pin_num = PIN_POS(pin);
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obj->mask = gpio_set(pin);
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obj->port = (PortName) PIN_PORT(pin);
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//Enable clock for particular port
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TSB_CG->FSYSMENB |= (1 << ((obj->port) + 2));
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}
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void gpio_mode(gpio_t *obj, PinMode mode)
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{
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// Set pin mode
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pin_mode(obj->pin, mode);
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}
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// Set gpio object pin direction
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void gpio_dir(gpio_t *obj, PinDirection direction)
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{
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// Set direction
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switch (direction) {
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case PIN_INPUT:
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// Set pin input
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gpio_func(&gpio_port_add,
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(gpio_gr_t)obj->port,
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(gpio_num_t)obj->pin_num,
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(uint32_t)ALT_FUNC_GPIO,
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GPIO_PIN_INPUT);
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break;
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case PIN_OUTPUT:
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// Set pin output
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gpio_func(&gpio_port_add,
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(gpio_gr_t)obj->port,
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(gpio_num_t)obj->pin_num,
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(uint32_t)ALT_FUNC_GPIO,
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GPIO_PIN_OUTPUT);
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break;
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case PIN_INOUT:
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// Set pin both input and output
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gpio_func(&gpio_port_add,
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(gpio_gr_t)obj->port,
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(gpio_num_t)obj->pin_num,
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(uint32_t)ALT_FUNC_GPIO,
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GPIO_PIN_INOUT);
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break;
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default:
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break;
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}
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}
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void gpio_write(gpio_t *obj, int value)
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{
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// Write gpio object pin data
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gpio_write_bit(&gpio_port_add, (gpio_gr_t)obj->port, (gpio_num_t)obj->pin_num, GPIO_Mode_DATA, value);
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}
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int gpio_read(gpio_t *obj)
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{
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// Read gpio object pin data
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gpio_pinstate_t val = GPIO_PIN_SET; // To initialize local variable
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gpio_read_bit(&gpio_port_add, (gpio_gr_t)obj->port, (gpio_num_t)obj->pin_num, GPIO_Mode_DATA, &val);
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return val;
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}
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